Put the stock in a small saucepan and heat it over medium-high heat until just simmering.
Meanwhile, make a roux by melting the butter in a wide sauté pan and whisking in the flour, then cooking it over medium heat until just turning blonde.
Carefully pour and whisk the stock into the roux and return to a simmer. Season with salt, pepper, and the brandy. Bring to a brief boil, then keep warm on the stove.
When the puddings have risen (high) and are brown and crisp on the edges, remove them from the oven.
Serve the puddings with the gravy, garnished with chopped chives.
Make another batch of batter for tomorrow! (Well, you'll want to, anyhow.)